The secret of long life? It's all down to how fast you react | Mail Online: "People's reaction times are a far better indicator of their chances of living a long life than their blood pressure, exercise levels or weight, researchers have discovered.

Men and women with the most sluggish response times are more than twice as likely to die prematurely."
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Sure. They get hit by cars, falling trees, space junk, icebergs, you name it. You have to move fast or die. Ask the Road Runner.